#include <iostream>
#define SIZE 10

using namespace std;

struct intArray {
  private:
     int a[SIZE];
  public:
     void set(int index, int value);
     void print();
};

void set(int index, int value) {
     if(index < SIZE)
        a[index] = value;
     else
        cout << "There was an error." << endl;
}

void intArray::print() {
     for(int i = 0; i < SIZE; i++)
          cout << "a[" << i << "] = " << a[i] << endl;
}

int main() {
     intArray num;

     for(int i = 0; i < SIZE; i++)
          num.set(i,i);
     num.print();

     cin.get();
}

error (L16): 'a' was not declared in this scope